基于PSR模型的耕地生态安全评价——以长江中下游粮食主产区为例

发布时间：2018-01-06 05:39

本文关键词：基于PSR模型的耕地生态安全评价——以长江中下游粮食主产区为例　出处：《水土保持研究》2017年03期 　论文类型：期刊论文

【摘要】：为探索长江中下游粮食主产区耕地生态安全现状及耕地生态安全影响因素的内在作用机理,基于PSR模型进行耕地生态安全测度,选取了单位面积COD负荷、单位面积SO2负荷、耕地压力指数等36个变量,通过评价值转化、综合评价值计量、协调度测算等方法而剖析研究区域的耕地生态安全问题。结果表明:鄱阳湖平原—赣抚平原—吉泰盆地—赣西粮食高产片位为流域耕地生态安全之首。鄱阳湖平原—赣抚平原—吉泰盆地—赣西粮食高产片的耕地生态安全压力亦在其他区域之上,而除江淮平原(江苏地区以外)各个流域的耕地生态安全响应系统皆相对薄弱,且未来耕地生态安全堪忧。流域内多地呈现出综合评价得分与协调度评价值呈负相关的态势,表明地区隐藏的生态危机广泛存在。由此得出:(1)经济发展方式对耕地生态安全存在关联性影响;(2)地形地貌以及水热条件对耕地生态安全具有内在影响;(3)因地制宜的污染治理是耕地生态缓解与治理的必要环节。
[Abstract]:In order to explore the present situation of cultivated land ecological security in the middle and lower reaches of the Yangtze River and the internal action mechanism of the influencing factors of cultivated land ecological security, the cultivated land ecological security was measured based on PSR model. Select 36 variables, such as unit area COD load, unit area SO2 load, cultivated land pressure index and so on, through the evaluation value transformation, the comprehensive evaluation value measurement. The ecological security of cultivated land in the study area is analyzed by means of coordination degree calculation and so on. The results show that:. Poyang Lake Plain, Ganfu Plain, Jitai Basin and West Jiangxi are the top of cultivated land ecological security. The pressure of cultivated land ecological safety in Poyang Lake Plain, Ganfu Plain, Jitai Basin and West Jiangxi Grain production Zone is also found in the Poyang Lake Plain, Ganfu Plain, Jitai Basin and West Jiangxi Province. Above other areas. Except the Jianghuai Plain (Jiangsu area), the response system of cultivated land ecological security is relatively weak. The ecological security of cultivated land in the future is worrying. There is a negative correlation between the comprehensive evaluation score and the evaluation value of coordination degree. It shows that the hidden ecological crisis exists widely. It is concluded that the mode of economic development has relevance to the ecological security of cultivated land. (2) topography and water and heat conditions have an inherent influence on the ecological security of cultivated land; 3) pollution control according to local conditions is a necessary link for ecological mitigation and management of cultivated land.
【作者单位】：东华理工大学测绘工程学院;流域生态与地理环境监测国家测绘地理信息局重点实验室;东华理工大学经济与管理学院;
【基金】：教育部人文社会科学研究青年基金项目“矿粮复合区耕地利用生态缓解机制研究”(14YJC630077) 国家自然科学基金青年基金项目“矿粮复合区土地利用冲突问题与缓解机制研究”(41501587);国家自然科学基金项目“农户家庭分工演进对农地利用效率的影响基于不同类型农区的经验分析”(41201118) 江西省社会科学研究“十二五”规划项目“江西省矿粮复合区耕地利用生态缓解途径及价值评估研究”(15GL40) 东华理工大学地质资源经济与管理研究中心开放基金重点项目:江西省矿产资源利用生态效率、时空演化与提升路径研究(15JJ03) 抚州市社会科学规划重点项目“抚州市农业面源污染的环境经济学分析及治理机制研究”(16k02) 测绘地理信息江西省研究生创新教育基地资助
【分类号】：X826;F323.211;F326.11
【正文快照】： 耕地生态安全问题根植于生态文明建设之中,是新时期国家对土地资源可持续利用、耕地生态状况、粮食安全以及永续发展问题的战略性关切,事关国计民生与伟大复兴的“中国梦”的实现,故而其得到国土资源、种植业经济、工业及相关部门的广泛关注。生态文明下耕地生态安全的定义倾

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